2 LUXEMBOURG Commenting on the jet incident, British Foreign Secretary William Hague said "I don't think it illustrates a different phase," Hague said. "It's very important that we increase the pressure with additional sanctions. Other countries will be very active in arguing for a new resolution from the (United Nations) Security Council." For her part, U.S. Secretary of State Hillary Clinton called the attack "brazen and unacceptable" and said Washington would cooperate closely with Ankara to promote a transition in strife-torn Syria. Meanwhile, Chinese Foreign Ministry spokesman Hong Lei told a daily news briefing: "China has noted the relevant reports and is paying close attention to developments." "At present, the regional situation is extremely complicated and sensitive. We hope that the parties concerned will exercise calm and restraint and adhere to diplomatic channels to reach an appropriate solution, so it does not escalate further." Turkish Foreign Ministry Ahmet Davutoglu said the jet had been clearly marked as Turkish and dismissed Syria's assertion it had not identified the aircraft before opening fire. --SPA 13:11 LOCAL TIME 10:11 GMT www.spa.gov.sa/1010761